Novel DOA estimation method for coherent wideband LFM signals
A novel direction of arrival (DOA) estimation method for coherent wideband linear frequency modulation (LFM) signals was proposed.Based on the dechirping property of LFM signal in fractional Fourier domain,a new array data model was constructed,then the matrix reconstruction and MUSIC algorithm were...
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| Format: | Article |
| Language: | zho |
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Editorial Department of Journal on Communications
2012-03-01
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| Series: | Tongxin xuebao |
| Subjects: | |
| Online Access: | http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)03-0122-08/ |
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| _version_ | 1841539924342341632 |
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| author | Peng,LIUKai-hua LUO Jie-xiao YU Yong-tao MA |
| author_facet | Peng,LIUKai-hua LUO Jie-xiao YU Yong-tao MA |
| author_sort | Peng,LIUKai-hua LUO |
| collection | DOAJ |
| description | A novel direction of arrival (DOA) estimation method for coherent wideband linear frequency modulation (LFM) signals was proposed.Based on the dechirping property of LFM signal in fractional Fourier domain,a new array data model was constructed,then the matrix reconstruction and MUSIC algorithm were used to estimate the DOA of coherent LFM signals.If there were multiple groups of coherent LFM signals incident,separated them in different energy-concentrated domains first,then carried the DOA estimation on each of the groups.Owing to fully excavating the time-frequency information included in observed signals,this method has good resolution ability and anti-noise performance,and the number of DOA that can be resolved is also increased.In addition,this method has no array redundancy and aperture loss,and can be applied to arbitrary array manifold.Simulation results show that this method can obtain nearly 8dB signal-to-noise ratio gain compared with the conventional method. |
| format | Article |
| id | doaj-art-d5a538606df741998e790077f1917a57 |
| institution | Kabale University |
| issn | 1000-436X |
| language | zho |
| publishDate | 2012-03-01 |
| publisher | Editorial Department of Journal on Communications |
| record_format | Article |
| series | Tongxin xuebao |
| spelling | doaj-art-d5a538606df741998e790077f1917a572025-01-14T06:31:28ZzhoEditorial Department of Journal on CommunicationsTongxin xuebao1000-436X2012-03-013312212959660889Novel DOA estimation method for coherent wideband LFM signalsPeng,LIUKai-hua LUOJie-xiao YUYong-tao MAA novel direction of arrival (DOA) estimation method for coherent wideband linear frequency modulation (LFM) signals was proposed.Based on the dechirping property of LFM signal in fractional Fourier domain,a new array data model was constructed,then the matrix reconstruction and MUSIC algorithm were used to estimate the DOA of coherent LFM signals.If there were multiple groups of coherent LFM signals incident,separated them in different energy-concentrated domains first,then carried the DOA estimation on each of the groups.Owing to fully excavating the time-frequency information included in observed signals,this method has good resolution ability and anti-noise performance,and the number of DOA that can be resolved is also increased.In addition,this method has no array redundancy and aperture loss,and can be applied to arbitrary array manifold.Simulation results show that this method can obtain nearly 8dB signal-to-noise ratio gain compared with the conventional method.http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)03-0122-08/coherent LFM signalDOA estimationFrFTdechirping domainMUSIC |
| spellingShingle | Peng,LIUKai-hua LUO Jie-xiao YU Yong-tao MA Novel DOA estimation method for coherent wideband LFM signals Tongxin xuebao coherent LFM signal DOA estimation FrFT dechirping domain MUSIC |
| title | Novel DOA estimation method for coherent wideband LFM signals |
| title_full | Novel DOA estimation method for coherent wideband LFM signals |
| title_fullStr | Novel DOA estimation method for coherent wideband LFM signals |
| title_full_unstemmed | Novel DOA estimation method for coherent wideband LFM signals |
| title_short | Novel DOA estimation method for coherent wideband LFM signals |
| title_sort | novel doa estimation method for coherent wideband lfm signals |
| topic | coherent LFM signal DOA estimation FrFT dechirping domain MUSIC |
| url | http://www.joconline.com.cn/zh/article/doi/1000-436X(2012)03-0122-08/ |
| work_keys_str_mv | AT pengliukaihualuo noveldoaestimationmethodforcoherentwidebandlfmsignals AT jiexiaoyu noveldoaestimationmethodforcoherentwidebandlfmsignals AT yongtaoma noveldoaestimationmethodforcoherentwidebandlfmsignals |